My 03 KFX 400 still won't start. I went riding the other weekend,my machine ran great the entire time. Came home and it hasn't ran since. This is the first problem i've ever had with this quad. I have no idea what's wrong with it. I have no motor mods. I've cleaned the carb completely. Made sure every hose was clear. There was lots of spark when i checked the plug, it was also wet so at least i know i'm getting fuel. Everything seems to be fine, but the damn thing won't start. I'm planning on going riding this weekend, does anybody have any suggestions on what to do? Thanks.

 

I'm in the middle of the same problem right now.Use a test light if you have one and check the ignition switch, kill switch, and grounds. The quad is probably fine, just something overidding it keeping it from running....... actually that would just kill the spark....weird. Check your service manual if you have one. Good luck!

 

speedi,

Since your getting spark change the plug and clean your air filter to start with. If plug is to wet it may have fouled out. Change it.


SB.

 

well yeah the plug may just be fouled if your lucky.

 

I just picked up a new k&n air filter today. I'll try changing the spark plug. All your responces are great, please keep the suggestions comming. Thanks

 

I think it might be the timing. Maybe its just sparking at the wrong time. How do i check this??? Thanks.

 

Did you shut off the petcock after your ride? I wonder if the needle/seat didn't work properly, flooding the engine.

 

This might sound simple,but I think my raptor I had blew a fuse once.I seem to recall it was under the seat.My memory is awful but might want to check it out.Please be nice if your's doesn't have a fuse.